Folding closures



B. .1. PASTOOR 3,359,594

FOLDING CLOS URES Dec. 26, 1967 2 Sheets-Sheet l Filed April 2, 1965INVENTOR f BEA/0 J. PAsTooR Attorney.:

Dec. 26, 1967 B, J. PASTOOR FOLDING CLOSURES 2 Sheets-Shee 2 Filed April2, 1965 INVENTOR ,5E/v0 J. PAsTooR n Atlorney United States Patent O3,359,594 FOLDING CLOSURES Beno Johannes Pastoor, 1170 Warden Ave.,Scarborough, Ontario, Canada Filed Apr. 2, 1965, Ser. No. 444,970Claims. (Cl. 16-178) The invention relates to improvements in foldingclosures and more particularly to closures adapted for use asconcertina-type folding doors, or as overhead rolling doors in generaluse for garages and the like.

In doors of this type, a plurality of slats are joined in hingedrelationship at their longitudinal edges and their efficiency, to agreat extent, depends on the reliability of their hinges.

Previously known hinges of this general type are often unsuitable forthis particular use because they do not provide full support along thewhole edges of the slats, and where a plurality of such hinges are usedat one joint the slightest misalignment results in malfunction of thehinge. Another disadvantage of conventional folding closures is that thehinged edges fully abut only when the slats are fully coplanar, with theresult that, until such coplanar relationship is attained, unsightlygaps are left between the hinged sections, so that the unit must eitherbe covered with a somewhat slack outer covering or must be engineered tobe an exact lit in the doorway when fully extended.

Furthermore, after conventional hinges become worn with use, theadjacent hinged edges are no longer fully contiguous so that, as in thecase of garage doors, they cease to be fully waterproof, theiretliciency therefore being decreased so that rain or the like may enterthe gaps and so contribute to rapid deterioration of the doors.

I have found that these disadvantages may be overcome by providing theslats which comprise such doors with members of circular, or partcircular sections which extend the length of their longitudinal edges,one of each pair of mating edges having a smaller diameter member thanthe other of the pair, the rst being contained in the second in close,concentric, sliding relationship, and a labyrinth-like development ofthis principle to permit full and free relation between such slats whileprecluding the formation of any gap between their edges.

It is, therefore, a primary object of the present invention to provide afolding closure in which the slats are in full edge to edge contact overtheir full length so that the possibility of misalignment issubstantially obviated.

Another object of the invention is to provide a folding closure in whichthere are no gaps between adjoining slats, regardless of the distancethe closure must be extended.

A further object of the invention is to provide a folding closure whichis substantially weatherproof, especially when utilized with the slatshorizontal.

A still further object of the invention is to provide a folding closurein which the hinges may be multi-walled to ensure adequate support andalso to provide a labyrinthtype seal between the slats.

Still another object of the invention is to provide a folding closure inwhich the slats may be divided horizontally in the case of a doorclosure into a plurality of separate panels to provide, for instance, acontrasting colour eifect, without upsetting the operation or eiciencyof the closure.

A still further object of the invention is to provide a folding closurein which the hinge portion may be detachable from the slats, therebyenabling large slat sections, or a plurality of slat sections, to beutilized and readily interchanged if desired and providing thepossibility of contrasting colour effects between the hinge portion andthe detachable slats.

And generally the objects of the invention lare to provide a foldingclosure which will be attractive in appear- ICC ance, simple to operate,elicient in use and which can be produced economically.

With the above and other objects in view the invention consists in thenovel features of construction, arrangements and combinations of partsset out herein and more particularly pointed out in the claims fornovelty following.

In describing the invention reference will be made to the accompanyingdrawings in which:

FIGURE 1 is a perspective view of a folding closure showing my inventionapplied to a door opening, the closure being partially open.

FIGURE 2 is an enlarged fractional sectional view through a slat, takenon the line 2-2 of FIGURE 1.

FIGURE 3 is an enlarged cross sectional view through two slats in theirfolded relation, taken on the line 3 3 of FIGURE 1.

FIGURE 4 is an enlarged, fractional, horizontally sectioned view througha modified construction wherein the hinge elements have detachableconnection with the slats.

FIGURE 5 is a sectional plan view of the structure of FIGURE 4, shown infully folded condition.

FIGURE 6 is a sectional plan view of a further modification of the hingestructure wherein the portions of the co-operating hinge elements of apair of elements which are adapted for connection to contiguous slatsare differently formed.

FIGURE 7 is a perspective view of a modified form of door constructionwherein the slats are formed of two superimposed sections which may beof Contrasting colour, joined together, the side walls of the two slatsbeing partially broken.

FIGURE 8 is a perspective view, foreshortened, of a bottom supportingplate, utilized in the modification of FIGURE 7.

FIGURE 9 is an enlarged fractional sectional view through a slat, takenon the line 9-9 of FIGURE 7.

FIGURE l0 is a fragmentary perspective view of a modified form of slatsupporting plate and associate slat.

FIGURE 11 is a fractional perspective view of a garage door of theroll-up type, showing the invention adapted thereto.

FIGURE 12 is an enlarged sectional and elevation of my hingeconstruction adaptable to the door structure shown in FIGURE ll.

FIGURE 13 is a side elevation of the complete garage door installationof FIGURE 11, shown in a diagrammatic form.

FIGURE 14 is an enlarged sectional and elevation of a multi-walled,labyrinth-type modication of my inventionadaptable to the door structureshown in FIGURE 1l.

Llke numeral of reference indicate corresponding parts in the variousfigures.

Referring to the drawings and particularly lirst to FIG- URES 1-3, inwhich the invention is shown applied t0 a door of the concertina typeadapted to operate with- 1n a door frame, 20 denotes generally a doorframe of conventional type, which consists of a top frame member 21 andvertical members 22, and 23 denotes generally my folding door assembly.

The closure member 23 consists of a plurality of elongated slats 24,each of which comprises a hollow member of rectangular cross section,and having parallel sides 24a closed at their edges by walls 24b. Theclosure assembly is formed by placing in edgewise relation to each otherthe number of slats required and by hinging together the adjacent edgesof adjoining slats throughout the full length of said slats.

FIGURE 3 particularly illustrates the hinge mechanism, wherein the edgesof each pair of meeting edges support co-operating hinge devices, orassemblies, designated generally as and 26, respectively, which areadapted for interconnection in such a manner as to permit such hingedslats to be swung from coplanar relationship to substantially parallelpositions, as when the doorway is fully opened, or between lesser limitswhen such is required.

The hinge assemblies 25 and 26 are preferably formed as integral partslof the edge walls of the slats to be hingedly connected and they extendlaterally from the edge walls for the full length of the slats.

The hinge element 25 consists of two semi-circular walls 27 and 28curving in opposite directions from a short web 29 which extendsoutwardly from the edge 24h, the wall 27 being' of considerably greaterdiameter than the wall 28 and extends from the slat edge in a semicircle which terminates in an end 30 in substantial opposition t0 theweb 29. The Wall 28 extends from a v short outward web 31 in a curveopposite to the Wall 27.

The Wall 28 is of lesser diameter than the wall 27 and is coaxial withsaid Wall 27 and said Wall 28 terminates in an end 32 considerably shortof the end 30 of said wall 27. Each edge of each slat contiguous to theslat having a hinge element 25, has a short web 33, of a slightlygreater length than the web 29 of the slat to which it is to be hingedand from the outer end of each said web 33 extends a semi-circular wall34 which is adapted to contain the wall 28 of the hinge member 25, as isclearly shown in FIGUR'E- 3. The wall 34 terminates in a web 35Which-extends radially inwards at a point but slightly removed from andat right angles to the end 32 of the wall 28, when the two hingedlyconnected slats are folded to parallel relationship, as in FIGURE 3, andsaid web 35 terminates in a cylindrical centre post 36 Which isconcentric to the wall 34.

From t-he drawing it will be obvious that the maximum diameter of thecentre post 36 is slightly less than the internal diameter of the wall28; the thickness of the wall 28 is slightly less than the width of thegap between the wall 34 and the post 36; the external diameter of thewall 34 is slightly less than the internal diameter of the wall 27.

Thus, upon assembly of an edge of one slat to that of another slat,which is effected by sliding them longitudinally into axial engagementto bring the walls 27, 28, 34 and the centre post into concentricrelation the edges of the two slats become hingedly connected and cannotbe separated under any normal circumstances by radial or lateral stress.

It should be noted that, as illustrated, when adjoining slats are foldedflatly against each other, at least a 4minimal clearance must existbetween the outer end 32 of the wall 28 and the web 35. Conversely, themaximum relative angle of opening between adjacent slats is governed bythe point at which the Webs 31 and 35 come into relation.

The slat assembly constituting the folding closure is adapted to besupported from a carriage mounted on a track 37 which is mountedtransversely of the door opening preferably in a suitable recesstransversely of the top door frame member. This trackway may be of anyof the well known trackways for the purpose and which for purposes ofillustration only is shown as consisting of a frame having two spacedrecesses 38 in which the wheels 39 carried on an axle 40 of the carriageassembly are adapted to roll.

4In order that each slat may be mounted independently for free rotationduring the folding movement thereof across the door opening, acylindrical shaft 41 is suspended from the axle in the longitudinalcentre of the axle and depends downwards a `considerable distance belowthe trackwayy and enters a vertical sleeve 42 which is located in theexact centre of the slat which it is to support, said sleeve 42 beingformed integral with and as a central tubular enlargement of the web 43which extends across the slat and joins with the sides 24a. The

shaft 41 is provided with a circumferential groove 44 at some pointwithin the sleeve 42 and in this groove is seated a circlip 45 which isof suicient outside diameter to extend beyond the shaft 41 into a groove45a formed interiorly of the sleeve, to provide an abutment for the saidsleeve and so provide a support for the slat. The web 43 supporting thesleeve 42 also contributes to the strength of the slat.

From the foregoing description of FIGURES 1, 2 and 3 it will be notedthat in this broad embodiment of the invention, any required number ofslats may be hingedly joined and rollably suspended from the track 37,the arrangement of the hinges being such that the door may be opened andclosed in concertina fashion.

In FIGURES 4 and 5 a modified embodiment of the invention is illustratedfor use with folding closures which must of necessity comprise a numberof wide, heavy slats as, for instance, those utilized in schools,hospitals, gymnasiums and the like, for sub-dividing large rooms. Inthis embodiment of the invention the hinge assemblies adapted to connectcontiguous edges of each two adjacent slats are separable from the slatsand are readily interlocked therewith. In this embodiment FIGURES 4 and5 show three slat sections which, although identical in construction,are for purpose of facility in describing their hinged relation,designated 50, a and 50b.

Each of such three slats and each other associated therewith, is hollow,of elongated rectangular section and is divided internally by aplurality of vertical, transverse walls 51 for maximum strength andlightness. A vertical sleeve 52 similar to the sleeve 42 of thestructure shown in FIGURES 2 and 9 is located within each slat by meansof a cross web 53, the sleeve 52 bein-g adapted to guide and locate theshaft 41 of the carriage assembly which rolls on the track 37. The slatsare individually suspended from the respective shafts 41 similarly tothe manner in which the slats 24 are suspended for turning movement onsaid shaft 41.

Each longitudinal edge 57 of each slat supports an endwise locatedT-device, the stem 58 of which extends outwardly from the transversecentre of the slat edge and the head 59 of which extends transversely ofand in parallel relation to the edge of the slat.

In FIGURES 4 and 5 the slats 50 and 50a are interconnected byco-operating `hinge assemblies 60 which interlockingly engage with andconnect the T-sections of adjacent slats, and the slats 50a and 50b areconnected by co-operating hinge assemblies 60a which engage with andhingedly connect the T-sections carried by the contiguous edges of saidslats 50a and Stb.

The co-operating hinge parts constituting the hinge assembly() employedto hingedly connect two adjacent slats, such as those designated 50 and50a, and the hinge parts constituting the hinge assembly employed tohingedly connect the slats 50a and 50b, are carried by and form lateralprojections from elongated box-like carriers 61, which are located atthe ends of the respective hinge assemblies and have detachableconnection with the T-devices carried by opposed slat edges. Thesebox-like carriers are of rectangular cross section and are adapted toextend throughout the lengths of the slat edges with their outer sidesparalleling the edges of the slats and slotted lengthwise, as at 61a, toslidably receive the stems 58 of the T-devices of opposing slat edges toplace the heads 59 of the T-devices within the boxlike carriers and sosupport the hinge assemblies throughont their lengths.

The box-like carriers can readily be associated with the appropriateT-devices by placing them in endwise relation thereto and sliding thesaid elements into interlocking relative engagement. It will be obviousthat the hinge assemblies can be readily attached to or detached fromtheslats.

Each hinge assembly adapted to hingedly connect adjacent slats alongtheir -opposing edges consists, as stated above, of hinge parts carriedby opposing box-like carriers 61. One of each pair of carriers 61, suchas is carried by the slat 50a facing the slat 50 edgewise, carries asintegral parts thereof from a web 62, two walls 64 and 65, each ofsubstantially semi-circular section, the wall 64 being of largerdiameter than the wall 65. The walls 64 and 65 are coaxial and extendoutwards from the web 62 in opposite directions. The opposing box-likecarrier 61 has an edgewise extending web 66 from which extends asemi-circular sectioned wall 67 which closely fits within the wall 64and which at its end joins with a web 67a which extends radially inwardsand terminates in a tubular centre post 68 which is coaxial with thewall 67 and is spaced from the wall 67 a distance slightly greater thanthe thickness of the wall 65 to freely receive the latter when the slats50 and 50a are hingedly towards one another to bring the webs 62 and 66towards one another as in the folding movement of the slats 50 and 50a.

Reference to FIGURE 4 will show that the curved walls 64 and 67 are ofsuch horizontal extent as to substantially abut the webs 66 and 62respectively, and that in such circumstances the slats 50 and 50a areheld from coplanar relationship and so give a pleated appearance to theclosure from the sides when fully extended. It is obvious, therefore,that the horizontal ex- Ytent of said walls will determine the pleatedappearance of the closure an-d that such appearance may be readilypredetermined in the construction of the closure.

As will be also noted from FIGURE 4, the curved elements comprisingalternate hinge assemblies are curved in like direction while those withwhich they alternate are oppositely directed, this being necessary inorder that the slats may swing in concertina fold fashion.

In FIGURE 5 the position assumed by the slats of FIGURE 4, and the hingeparts connecting same in the completely folded condition thereof, areclearly shown.

In FIGURE 6 a structure is shown wherein the portions of a hingeassembly which actually interlock to form the hinge construction areidentical with the corresponding parts shown in FIGURE 4, but, the meansfor connecting one of the carriers (left side of FIGURE 6) for one ofsaid parts to one slat corresponds to the means shown in FIGURE v4 andthe means for connecting the carrier for the other hinge element to theother slat differs from the means shown in FIGURE 4.

Whereas in FIGURE 4 the slat 50a is clearly shown as having T-devicesextending from opposite ends thereof and box-like carriers 61 have theiradjacent walls provided with slots 61a to allow of interengagement ofthe carriers andthe slats, in FIGURE 6 the T-devices, designated at 70,associated with one hinge element, is formed as an extension of theouter wall of a carrier 71 and -the contiguous edge of the slat to ybehingedly connected thereto is provided with a longitudinal slot 72 toreceive the stem of the T-device to place the T-head within the slat toconnect the hinge elements to the slats.

The means illustrated in FIGURE 6 (right hand side of hinge assembly)for connecting the carrier to the corresponding end of the associatedslat corresponds to the means shown in FIGURE 4 yin that the carrier61has its outer wall provided with a `slot 61a and the corresponding endof the slat carries a T-device for interlocking engagement with thecarrier.

If desired, the outer edge of the slat designated 73 in FIGURE 6 may beprovided with a slot 74 to permit of such edge being interconnected witha carrier having a T-extension.

In FIGURES 7, 8 and 9 a form of the invention is illustrated in whicheach of the slats of the closure consists of upper and lower sections75and 76, respectively, joined in vertically aligned relation and eachhaving hinge elements (not shown as same may be of any of lthe typedescribed hereinbefore) falso vertically aligned `and adapted to lbecooperatively related. Theupper and lower slat sections may be ofcontrasting colors or of different materials, as desired, to provide aclosure having a novel and pleasing appearance.

As means to secure the slat sections in proper superimposed, close,endwise engagement with each other a sleeve 77, correspondingsubstantially to the sleeve 42 shown in FIGURE 2 extends downwardsthrough the top slat section and engages a similar sleeve 78 in thebottom slat section and terminates short of the lower end of the bottomslat section. These sleeves 77 and 78 provide a housing for a headedshaft 79 which extends completely through the aligned slat sections andhas its lower end Portion threaded, as at 81, to extend beyond the lowerend of the sleeve 78.

Each sectional slat is provided with a shoe 82 on which it is adapted torest and which is provided with an upstanding open-topped sleeve 83 inits longitudinal centre provided with internal threads 84 into which thethreaded lower end v81 o}f the slat or rod 79 is adapted to be threadedby the aid of a Isuitable tool, (not shown) engagable with the head 85of the said shaft. It is obvious that when the shaft is turned in theappropriate directions the shoe will be drawn up and will thus draw theupper and lower slat sections and their hinge parts tightly together.

The shoes 82 preferably have flat lower surfaces and have their endsrounded, as at [86, and have shallow upstanding side walls 87 to closelyengage the sides of the lower slats. It is preferable, also, that therebe provided at least one pair of upstanding floor bosses 88 and 89 atopposite sides of the sleeves 83 spaced therefrom endwise with respectto said sleeve, said bosses having straight vertical sides 90 extendingparallel with the side walls 87 and spaced therefrom a suicient distanceat each side to snugly receive the side walls -of the lower slats andbeing of the required dimensions lengthwise to engage the transversereinforcing walls 51, so as to prevent misalignment of the shoes withrespect to the slats.

IIn order to hold the upper and lower sections of the slats againsthorizontal misalignment each slat has therewithin in surface contactwith vertically -aligned interior surfaces of the slat sections, aHat-sided plate 90 which stands on the associated shoel 82 and extendsupwards completely through the lower section and terminates within theupper slat section.

In FIGURE 10 a modified form of slat supporting shoe is designatedgenerally by the numeral 91. This shoe has a at lupper surface 92 withrounded ends 93 and has shallow, parallel, upstanding side walls 94positioned between the rounded ends. These upstanding side walls havetop marginal portions 95 of reduced length with re- 'spect to saidwalls, positioned medially of the lengths incline of the slots 96correspond with the incline of the anges 95. The slat-s and their shoescan readily be connected simply by raising the slats sufficiently tobring the slots 96 and the shoe flanges 95 into endwise alignment, uponwhich endwise relative movement will cause the shoe flanges to enter theslots. The hinge sections can now be lowered to rest on the rounded endsof theshoes.

The shoe anges are ma-de to correspond in length with the transversedepths of the slat walls from edge to edge, in which event it will befound that the slats and the shoes will be held to their relativepositions by the edges of the hinge sections.

Referring now to FIGURES 11-13 wherein an extremely simple version ofthe invention is illustrated, suitable for use with garage doors or thelike which require only a limited angular movement between adjoiningslats.

=In the embodiment shown in said FIGURIES 11-13 the slats designatedgenerally by the numeral 97, are arranged horizontally in edgewiseparallel hinged relation and each may vconsist of .a number of hollow,integral sections 98. In this `arrangement the endmost sections of theslats are provided with hinge means for joining the slats to adjacentslats. y

'In FIGURE 12 a hinge connection between the meeting edges of two slatsis shown, in which one edge of one slat section has an edgewiseextending part 99 from which extends in opposite directions curved Iarms100 and 101 of substantially equal length which describe in crosssection the major part of a circle open along its part substantially inopposition to the part 99, as at 102, and the edge of the slat which isto -be co-operatively joined to the hinge element just described has anedgewise extending part 103 terminating in a full .circular section tube104 adapted to `be a close sliding t within the part circle formed bythe arms 100 and 101.

This arrangement allows the slats to depend from each other while thevportions 100 and 101 and 104 of the hinge mechanism remain fullyconnected. The relative angular movement between adjacent slats is, ofcourse, Ilimited by the distance between the edges 105 and 106 of thearms 100 and 101 which act as stops for the part 103 and apart from thenecessity of being a major arc, the design criterion determining thespacing between edges 105 and 106 is reliant on the space available foroverhead storage, as shown at 107 in FIGURE 13, and consequently uponthe maximum relative angles between adjacent door sections or slats 97engendered during the rolling 4up or rolling down of the door.

It should be noted that upon assembling a number of slats 97 together,the mating hinge portions are slid axially into full engagement,although certain lapplications are envisioned wherein the slats may befabricated of, say, a resilient plastic, where it will -be possible toassemble the tubes 104 to their positions within the arms 100 and 101 bya simple snap action, the weight of the material being so little as topreclude the possibility of the slats being inadvertently detached inthe same manner.

Insofar asweatherproofing i-s concerned, it will be obvious that thesemi-circular portion formed by the arms 100 and 101 acts asla shroudfor the hin-ge mechanism as a whole and rain water or the like isdeflected downwardly Aand away vfrom the hinge joint, and in additionthe full surfacel contact between the component parts of ythe hingeeffectively prevents the ingress of moisture by capillary action.

`FIGIURE 14 illustrates a similar but more sophisticated ,hinge thanthat shown in FIGURE 12, the uppermost component 108v comprising a pairof concentric, spaced apart, semi-.circular arms 109 and 110 joined by aradial web 111 at their inner sides and widely spaced at their outerends. The annular gaps between the arms 109 and 110 are `adapted toreceive a slotted tube-like member comprising semi-circular arms 112 and113 which extend from an extension l114 of the one slat. A tubularmember 1,15 iscarried by a web 1116 and is a close sliding fit withinthe innermost arms 109 and 110. The slotted tube-like device formedv bythe `arms 112 and 113 and the centre tube v 115 form the lower componentof one hinge element. The

I presently preferred forms of constructions and arrangement and certainmodifications thereof, these are capable of variation and modification.I, therefore, do lnot wish to be limited to the precise details ofconstruction and arrangements set out herein but desire to avail myselfof such variations and modifications as come within the spirit of theinvention.

What I claim is: v l1. A hinge construction comprising first and second'j parts each provided with a web terminating in fastening means at oneend thereof to secure the part to apanel or the like, said web lying ina plane substantially in coincidence with the plane of one side of apanel t0 which it is to be secured, the web of said first partsupporting at its other end a radially spaced concentric arrangement ofat least one partial cylindrical member and a compete cylindrical membersupported by an inturned axial edge 0f the innermost of said partialcylindrical members, said inturned edge being located substantiallyopposite the supporting web of the arrangement in a plane substantiallyin common with the plane of the web, the web of the second partsupporting at its other end an arrangement of at least two radiallyspaced partial cylindrical members telescopically slidable in an axialdirection into concentric journable intermeshing relationship with theconcentric cylindrical arrangement of the first part, the innermostpartial cylindrical member of the second part journably meshing with thecomplete cylindrical member of the first part, the partial cylindricalmembers Aof the secondy part arcuately extending alternately in oppositedirections from an axial edge of the web of that second part with thecircumferential length of at least one of the partial cylindricalmembers of the second part being proportioned with respect to its pointof Contact with the web of the first part and the circumferential lengthof the innermost partial cylindrical member of the first part beingproportioned with respect to its point of contact with a web of thesecond part, to allow limited relative rotational movement between thecylinder arrangements when intermeshed, the axis of the cylindricalarrangements of one part lying substantially in a plane common with thatof the supporting web of that part, and wherein in the folded positionof the hinge the webs of the parts project substantially in the samedirection with respect to the axis of the intermeshed cylinders.

2. The hinge construction as claimed in claim 1 wherein said fasteningmeans each terminate in a plane projecting perpendicular to the plane ofits associated web and parallel to the axis of the cylindricalarrangement of that part and in opposite directions with respect to eachother when the hinge is assembled and in folded position.

3. A hinge construction comprising first and second parts provided withfastening means to secure the part to a panel or the like, said firstpart being provided with a web supporting a radially spaced concentricarrangement of at least one partial cylindrical member and a completecylindrical member supported by an inturned edge of the innermost ofsaid partial cylindrical members, said inturned edge being locatedsubstantially opposite the supporting web with respect to thearrangement and in a plane common with the plane of the one side of theweb, said second part being provided with a web supporting a radiallyspaced concentric arrangement of partial cylindrical memberstelescopically slidable in ,a longitudinal direction onto and intointermeshed relationship with the cylindrical members of the first part,the innermost partial cylindrical member of the second part beingrotatable between the complete y-cylindrical member and the innermostpartial cylindrical member ofthe first part, the

axis of each arrangement lying in a plane common with vone side of thepanel to which it is to be secured wherein, when said hinge parts areassembled in folded position, the innermost partial cylindrical membersof the second part is enclosed between the complete cylindrical memberand the innermost par-tial cylindrical member of the first part and saidcommon planes are immediately adjacent each other in parallelrelationship.

4. The hinge construction as claimed in claim 3 wherein the partialcylindrical members of one part alternately and arcuately project inopposite directions from the supporting web.

5. The hinge construction as claimed in claim 3 wherein the axis of thearrangement of cylindrical members of each Part are in a plane commonwith their associated Support-ingY WtlJS, said fastening means eachterminating 9 in a plane perpendicular to the said common plane and3,056,451 projecting in opposite directions with respect to each other3,118,702 when the hinge is in assembled folded position.

1,384,844 References Cited 5 588,493 UNITED STATES PATENTS 5242282,365,378 12/1944 Benson 160-235 2,641,018 6/1953 Snyder 160-235 10 10/1962 Federline et al. 160-235 X 1/1964 Kale et al i60-235 X FOREIGNPATENTS 11/1964 France. 11/ 1933 Germany.

8/ 1940 Great Britain.

DAVID J. WILLIAMOWSKY, Primary Examiner.

DENNIS L. TAYLOR, Exwminer.

3. A HINGE CONSTRUCTION COMPRISING FIRST AND SECOND PARTS PROVIDED WITHFASTENING MEANS TO SECURE THE PART TO A PANEL OR THE LIKE, SAID FIRSTPART BEING PROVIDED WITH A WEB SUPPORTING A RADIALLY SPACED CONCENTRICARRANGEMENT OF AT LEAST ONE PARTIAL CYLINDRICAL MEMBER AND A COMPLETECYLINDRICAL MEMBER SUPPORTED BY AN INTURNED EDGE OF THE INNERMOST OFSAID PARTIAL CYLINDRICAL MEMBERS, SAID INTURNED EDGE BEING LOCATEDSUBSTANTIALLY OPPOSITE THE SUPPORTING WEB WITH RESPECT TO THEARRANGEMENT AND IN A PLANE COMMON WITH THE PLANE OF THE ONE SIDE OF THEWEB, SAID SECOND PART BEING PROVIDED WITH A WEB SUPPORTING A RADIALLYSPACED CONCENTRIC ARRANGEMENT OF PARTIAL CYLINDRICAL MEMBERSTELESCOPICALLY SLIDABLE IN A LONGITUDINAL DIRECTION ONTO AND INTOINTERMESHED RELATIONSHIP WITH THE CYLINDRICAL MEMBERS OF THE FIRST PART,THE INNERMOST PARTTIAL CYLINDRICLA MEMBER OF THE SECOND PART BEINGROTATABLE BETWEEN THE COMPLETE CYLINDRICAL MEMBER AND THE INNERMOSTPARTIAL CYLINDRICAL MEMBER OF THE FIRST PART, THE AXIS OF EACHARRANGEMENT LYING IN A PLANE COMMON WITH ONE SIDE OF THE PANEL TO WHICHIT IS TO BE SECURED WHEREIN, WHEN SAID HINGE PARTS ARE ASSEMBLED INFOLDED POSITION, THE INNERMOST PARTIAL CYLINDRICAL MEMBERS OF THE SECONDPART IS ENCLOSED BETWEEN THE COMPLETE CYLINDRICAL MEMBER AND THEINNERMOST PARTIAL CYLINDRICAL MEMBER OF THE FIRST PART AND SAID COMMONPLANES ARE IMMEDIATELY ADJACENT EACH OTHER IN PARALLEL RELATIONSHIP.